Reversing-gearing



T. J. HUGHES. REVEBSING GEARING. APPLICATION FILED OCT. 12. 1920.

1,384,388. Patented July 12, 1921.

I IMO I I 1 INVENTOR 7%0/2/05 Jf/Zqfiw W M ATTORNEY UNITED STATES THOMASJ. HUGHES, or SEATTLE, WASHINGTON.

REVERSING-GEARING.

Specification of Letters Patent. Patented Ji ly 12, 1921.

Application filed October 12, .1920.' Serial No.416,426. y a

To all whom it'mag concern:

Be it known that I, THOMAS J. HUGHES, a citizen of the United States,residing at Seattle, in the county of King and State of Washington, haveinvented certain new and useful Improvements in ReversingGearing, ofwhich the following is a specification.

This invention relates to reversing gearing and has for its object toprovide simple, compact, durable and eflicient mechanism whereby adriving member may be connected to a driven member for positivelyrotating the latter in the same or in opposite directions.

The invention consists in the novel construction, combination andarrangement of parts as hereinafter described and claimed.

An embodiment of my invention is illustrated in the accompanyingdrawings, wherein- Figure 1 is a longitudinal sectional view takenthrough 1-1 of Fig. 2, and Fig. 2 is an end elevational view with someof the parts broken away to disclose other parts in the rear thereof.

In said drawings, the numeral 5 designates a primary shaft which may berotated by any suitable driving means, and 6 is a secondary shaft whichis driven from said primary shaft through the instrumentality of gearingto be hereinafter described.

Said shafts are arranged parallel with each other and are shown asjournaled in bearin boxes 5 and 6 provided in frame plates and 8 whichare rigidly secured to a suitable support.

Keyed or otherwise secured to the secondary shaft 6 between said frameplates are two spur gears 9 and 10 of unequal diameters and herein shownas integral. with each other. Surrounding the smaller gear 10 is aseries of spur pinions 12 respectively mounted on studs 13 which aresecured in spaced relations to the frame plate 7 so that the pinionswill be in mesh with. the gear 1.0.

The pinions .12, in turn, are surrounded by a ring gear 1 1 of anexternal diameter equal to the diameter of the gear 9. This ring gear isprovided about its outer periphery with spur teeth 15 corresponding innumber and sizes with those of the gear 9.

The ring gear 1 1 is interiorly provided with teeth 16 meshing with theteeth of the pinions 12, which latter serve to support the ring gear andmaintain the same concentric to the axis of the secondary shaft 6. C011-5 in th nected vfor axial movements, as by a spline l7, to theprimaryshaft 5 is a sleeve 18 which is formed or provided with a gearelement or pinion 19 which is selectively engageable with the teeth ofgear 9 or with the; external teeth l5 lofsaid ring gear; As shown, of abifurcated lever 20 fulcrumed at 21 to the frame plate 7 and isconnected to the sleeve 18 by means of a collar 22 whichis rotatable inan annular groove provided in the sleeve.

Assuming that the pinion 19 is driven counter-clockwise and engages thering gear I 14 as shown in the drawings it will be apparent that thepower is transmitted through the system of gears-14, 12, 10--as denotedby direction arrows in Fig. 2 to drive the shaft 6 in the same rotarydirection as the shaft 5.

When the pinion 19, however, is moved from its engagement with the ringgear into engagement with the gear 9 the shaft 6 is caused to be rotatedin the opposite direction to the shaft 5.

the pinion 19 is shiftable by means.

PATENT OFFICE. if

It will of course be understood that the I number of pinions 12 actingbetween the ring gear 14 and the smaller gear 10 on the secondary shaft6 may be varied and that if desired the duties of the primary andsecondary shafts may be reversed, that is to say, th shaft 6 may beutilized as the driving member whereby motion is transmitted through themedium of the above described gears for thepurpose of rotating the shafte same or opposite direction to that of the shaft 6. 1

The construction, operation and advantages of my improved reversinggearing will, it is thought, be understood from the foregoingdescription.

What I claim 1s,-

1. In a reversing-gear, the combination of a frame, a shaft extendingtherethrough, two gear-wheels of imequal diameters mounted upon saidshaft, a gear-ring, a plurality of pinions rotatably connected tosaidframe and meshing with the smaller of said gear-wheels and the ring-gearto afford driving connections therebetween, a second shaft, a pinionrotatablymounted thereon, and means for moving the last named pinion toengage either the larger of said gear-wheels or the ring-gear.

2. In a reversing-gear, the combination of a frame, a sha t ex endingtherethrough,

two gear-wheels of unequal diameters mounted upon said shaft, agear-ring having a diameter equal to the larger of said gear-Wheels, aplurality of pinions rotatably connected to said frame and meshing vviththe smaller of said gear- Wheels and the ringgear to afford drivingconnections there between and also serving to supportthe ring-gearconcentrically to the axis of said shaft, av second shaft, a pinionrotatably mounted thereon, and means for moving the last named pinion toengage either the larger of saidgear-Wheels or the ring-gear.

3 Ina reversing-gear, the combination of a frame,-a shaft journaledtherein, tWo gear- Wheels of unequal diameters mounted on

